Die-casting machine.



A. W. MORRIS.

DIE CASTING MACHINE.

APPLICATION man 1AN.20. 1916.

1 ,239, 807 Patented Sept. l1, 1917.

5 SHEETS-SHEET I.

A. W. MORRIS.

DIE CASTING MACHINE.

APPLICATION FILED IAN. 20. ISIS.

1,239,807. Patented Sept. 11, 1917;

5 SHEETS-SHEET 2.

69 mh/frJffoR Aggie( v/. momma 157' ma mffofrly A. W. MORRIS.

DIE CASTING MACHINE.

APPucATloN FILED JAN.20. 191s.

1,239,807. Patented Sept. 11, 1917.

5 SHEETS-SHEET 3.

A.=W. MORRIS* Y DIE CASTING MACHINE. APPLlcArlou FILED umzo. 191e.

1,239,807. f Patented sept. 11', 1917.,

5 SHEETS-SHEET 4- A. W. MORRIS.

DIE CASTING MACHINE.

APPLICATION FILED 1AN.20. |916.

1 ,239, 807 t Patented Sept.- 11, 1917.

5 SHEETS-SHEET 5.

JAW M UNITED STATES PATENT OFFICE.

ALBERT W. MORRIS, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR T0 MORRIS PROCESS OF NEW YORK, INCORPORATED, OF NEW YORK, N. Y., lCORPORATION 0F NEW YORK.

Specification of Letters Iatent.

DIE-CASTING MACHINE.

'Application led January 20, 1916. Serial No. 73,124.

To all whom t may concern.'

Be itknown that I, ALBERT W. MORRIS, a citizen of the United States, residing in Springfield, Massachusetts, have invented certain Improvements in Die-CastinggMachines, of which the following is a specification. l l

My invention relates to the means employed for heating the melting pot, for governing the admission of air under pressure thereto, for opening and closing the discharge nozzle of the melting pot, for closing and separating the parts of the mold, for inserting and withdrawing the cores, for ejecting the casting from the mold, and for maintaining close contact between the melting pot andmold during the casting operation. The means are such as to prevent removal of the mold from the casting position until the discharge nozzle of the melting pot has been first closed, and said means are by preference so disposed thatl they lcan be readilyT operated by a single attendant standing in front of the machine.

In the accompanying drawings--y y Figure 1 is a side elevation of a casting machine constructed in accordance with my. invention, showing the parts in casting position;

Fig. 2 is a similar view showing the parts in position for-discharging the casting from the mold; V

Fig. 3 is a view, partly in elevation land partly in section, on the line a-a, Fig. 1;

Fig. 4 is a view, partly in elevation and partly in section, on the line b-b, Fig. 3;

Fig. 5 is a sectional view of certain of the parts shown in Fig. 4, but in a different position from that there represented;

Fig. 6 is a sectional view of the mold, cope and core plates separated from one another and the ejectors projected so as to discharge the casting from the mold;

Fig. 7 is a horizontal section on the line c-c, Fig. 3;

Fig. 8 is a sectional View illustrating a laterally separable mold made in accordance with my invention, and Fig. 9 is a. horizontalV section representing, respectively, by full and dotted lines,

the two positions of a certain discharge trough with which the machine is provided.

In the drawings, 1 represents the base plate of themachine from which rise four vertical posts 2 upon which, ata suitable height above the base, are rigidly mounted a pair of bars 3 to which are attached the base 4 of the fire pot 5, the latter being constructed of rebrick or other refractory material, and surrounding the melting pot 6 which, is secured to a co ver plate 7 rigidly mounted upon the upper ends 'of the posts 2 and having in it passages S for theadmission of air underpress'ure into the upper 'end 0fr the melting pot 6, the flow of air being regulated by valves whose casings form part of bars 9 mounted upon the posts 2 and whose plugs are provided with spur wheels l0 in mesh with segmental racks 11 on levers 12 pivotally mounted upon shafts 13 carried by bars 14 properly supported upon the posts 2, said levers l2 being connected by a yoke 15, whereby they may be simultaneously moved from one extrem'e position to the other as hereinafter described.

One of the levers 12 has a projecting stud 16 which plays in a slot 17 formed'in a link 18, the latter being pivotally connected at its upper end to one arm of a lever 19 which is secured to a shaft 20 mounted in suitable bearings in the cover plate 7 of the melting pot and carrying a spur wheel 21 which is in mesh with a rack 22 formed upon the enlarged upper end of the stem of a plug 23 suitably guided in a bearing 24 within the meltin pot and serving, as it is raised and lowere to open and close the outlet or dis charge nozzle at the lower end of said pot.

Each of the shafts 13 also carries a cam 25 which acts upon an anti-friction roller 26 mounted upon a member 27 guided so `"as to be free to move vertically upon a pair of the lposts, this member engagingA with suitable eadsat the upper ends of lifting rods 28 whose function will lbe hereinafter eX- plained.

froma pair of {iuid fuel burners 30 which are contained in suitable openings in the opposite sides ofthe fire pot 5 and are disposed tangentially as shown in Fig. 7, so that the ames discharged therefrom will be caused to.circle around the lower portion of the fire pot, and thus apply heat to all portions of the same in order to rapidly melt the contents thereof or maintain them in a molten condition.

In the top of the fire pot is a deflector plate 31 secured to and depending from the cap plate 7 and serving to revent the direct flow of air' under pressure om the passages 8 into the upper end of the fire pot and to distribute said flow uniformly around the fire pot, thus preventing the air from impinging with a chilling effect upon a certain area only of the top of the mass of molten metal in the pot.

Upon the pair of posts 2 at each side of the machine is mounted so as to be susceptible of vertical movement a frame 32 having openings therethrough for the reception of the lower ends of the rods 28 on that side of the machine, springs 33 being inter posed between bearings on said frame 32 and vertically adjustable washers 34 on the rods 28 so that as said rods are raised a yielding lift will at the same time beimparted to the frame 32 and to the parts carried thereby. 'Extending across the machine from one frame 32 to the other is a shaft 35, upon which is mounted, so as to swing, a rectangular frame 36 which carries the mold and the parts coperating therewith.

The frame v36 comprises a central transverse tubular member for the reception of the shaft 35, which tubular member has four oppositely projecting longitudinal bars connected together at the opposite ends of the frame by transverse bars, so as to produce a strong and rigid structure.

The body 40 of the mold is rigidly mounted upon the top bar of the frame l36 and coperating with said mold body are the'cope 41, an upper core plate 42, a lower core plate 43, and an injector plate 44, the cores of the upper core plate projecting downwardly into the upper portion of the mold, the cores of' the lower core plate projecting upwardly into the same, and the ejector pins 45 being suitably guided in the body ofthe mold, and in the lower core plate 43.

Projecting downwardly from the cope of the mold and .from the upper and lower core plates and ejector plate of the mold are rods, numbered respectively 41, 42, 43a and 44, and these rods carry, respectively, bars 41h, 42b 43? and 44", carrying, respectively, anti-friction rollers 41, 42, 43c or 44C, which run, respectively, upon-cams 41"` 42d, 43 or 44d.

The cams 41d, 42d and 44l are disposed above the shaft 35 and the cams 43d are disposed below the same, as shownin Fig. 4, each of the cams 411,42d and 44d being connected at its lower end to a bar 46 on the frames 32 and at its upper end by means of a block 47 to a bar 48 on said frames, and

the upper end of the cam 43d being connected at its upper end to said bar 48 and at its lower end, through the medium of a block 49, to the bar 46.

The rods 41, 42a, 43a and 44n are all vertically guided in the top and bottom bars Iof the frame 36, consequenty as said frame swings on the shaft 35 the mold 40 and all of the parts coperating therewith will be caused to swing therewith and the various bars 41h, 42h, 43b and 44b will have positive movement imparted to them as the frame 36 swings forwardly from the position shown in Figs. 1 and 4 to that shown in Fig. 2, the effect of this movement being to move the cope 41, upper core plate 42 and lower core plate 43 away from the mold and to project the ejector fingers 45 into the mold.

As the frame 36 swings from the position shown in Fig. 2 to that shown in Figs. 1 and 4, springs 50 act upon collars on the rods 41a, 42a, 43a and 44u so as to again close the cope 4l upon the body of the mold, insert the cores carried by the core plates 42 and 43 and withdraw the ejector pins carried by the plate 44.

Supposing that the parts are in the casting position shown in Figs. 1, 3 and 4, the plug 23 of the melting pot will have been elevated, the cams 25 will have lifted the bars 27 and hence, through the rods 28, the frames 32 and the parts carried thereby so as to ress the uppermost member of the mold j in. this case the upper core plate 42) firmly against the nozzle of the melting pot 6, At the same time locking bolts 51 carrled by the frame 36 are inserted into 'openyings in the base 4 of the fire pot so as to effectually lock -said .frame againstv outward swinging movement on the shaft 35.

When it is desired to provide a still tighter joint between the upper member of the mold and the nozzle of the melting pot, I mount upon the base 1 of the machine a pneumatic jack for pressing upwardly against the lower cross bar of the frame 36 and thereby imparting upward pressure to said frame and to the mold carried thereby. This jack consists of a cylinder 60 having a plunger 61 projecting upwardly therefrom and bearing against the lower cross bar of the frame 36, said plunger passing through a cover on the cylinder 60 and having within said cylinder a piston 62.

Mounted upon the posts 2 of the machine, below one of the frames 32, is across head 63 having therein vpassages 64, 65 and 66 which communicate with a chamber containing a valve 67 so' ported that when in the position shown in Fig. 2 it will provide comspace in the cylinder 60 above the piston 62,-

the passage 65 communicating through a pipe with the cylinder 60 below the piston `62. The pipe 69 provides for `the maintenance of constant pressure in the cylinder 60 above the projecting rim of the piston 62 and hence tends constantly to drive said piston downwardly in the cylinder.

When the valve 67 is in the position shown inFig. 2 the space below the piston 62 is open to the atmosphere through the pipe 70 and passages 65 and 66 in the cross head 63, consequently pressure above the piston forces 4.the latter downwardly in the cylinder and lowers the plunger 61. lWhen, however, the parts are adjusted to the position shown in Fig. 1, air under pressure enters the lowerend of the cylinder 60 throughi the passages 64 and 65 and pipe 70 and forces the piston 62 upwardly in said cylinder' so as to raise the plunger 61 and press the upper end of the same forcibly against the bottom cross bar of the frame 36 so as to jam the top member of the mold forcibly against the nozzle of the melting pot, as shown in Fig. 3. The valve'67 may be conveniently operated by hand whenever the pressure of the lifting jack upon the frame 36 is to be exerted or removed.

When the parts are in the position shown in Figs. 1 and 3, the valves which control the flow of air through the passages 8 in the cap of the melting pot are in su'ch position as to admit air under pressure to the top of the meltin pot sof'as to force the molten metal from 51e latter under pressure into the mold. As soon as the casting has been completed, however, the yoke 15 is raised, which has the effect of partially turning the shafts 13 and 20, thereby closing the valves in the air pipes, and at the same time loweringthe plug 23 and closing the nozzle of the melting pot, the turning of the shaft 13 also releasing the bars 27 from the lifting action of the cams 25 so as to permitof the lowering of the frames 32, the dropping of the upper core plate 42 away from the nozzle of the melting pot and the release of the i locking bolts 51 from engagement with the base of the fire pot.

The frame 36 is now free to be swung from the position shown in Figs. 1, 3 and 4 to that shown in Fig. 2 and the cores are thereby withdrawn from the mold, the cope 41 is separated from the body of the mold,

the ready swinging of said frame on the shaft 35 this frame is also provided with an operating yoke 53.

The machine heretofore described has the body of the mold in one piece, hence the casting formed therein cannot have thereon screw threads or .other lateral projections which would interfere with the ejection of the casting from the mold. When castings of the. latter'type are to be made I form the body of the mold in laterally separable sections 55 and 56, such as shown for instance in Fig. 8, these sections having laterally projecting stems 55a and 56a with racks thereon which engage spur wheels 55b andl 56 mounted in the base of the mold so as to be rotatable therein, other stems 55c and 56c depending from the cope 41 of the mold and lying alongside of the stems 55' and 56a, said stems 55 and 56c also having racks thereon for engagement, respectively, with the spur wheels 55b and 56h, the latter being long enough to engage bothracks, whereby the opposite halves of the mold body will be laterally separated as the cope is raised therefrom and will be moved into contact with each other again as the cope is lowered thereonto.

In order to lock, in the positions shown in Fig. 2, the yoke 15 and the various parts operated thereby so as to prevent the iniow of air under pressure into the upper portion of the melting pot or the raising of the discharge controlling valve or plug therein until the mold has been brought into proper position beneath said pot, I provide a locking lever 71 which, when the mold is swung away from the melting pot, as shown in Fig. 2, engages with a locking notch in one of the cams' 25 and thus efectually prevents movement of the yoke 15 to which said cam is rigidly connected.

to the position shown in Fig. 2 so as to raise the other arm of the lever into locking engagement with the cam 25. When, however, the mold-carrying frame is swung into position beneath the melting pot, the bent arm of the lever 71 is struck by a portion of the shield 52 or other available part of the mold-carrying frame which has the effect of swinging said lever to'the position shown in Fig. 1, thereby withdrawing its locking arm from the notch in the cam 25 so as to permit of the depression of the yoke 15, the admission of air under pressure to the upper end of the melting pot, and the raising of the discharge valve or plug in said melting pot. which follows such depression of said yoke. A locking lever 71 may be employed .in connection with each of the cams 25, if desired.

In order to empty the melting pot when desired, or to receive molten metal from thg pot should the discharge valve or plug therein be accidentally opened .when the mold is swung away from its position beneath the pot, I provide a swinging trough 75 pivotally mounted upon one of the posts 2 so as to be free to swing into position beneath the nozzle of the melting pot, as shown in Fig. 2, when the mold is swung away therefrom, but moved out of such position, as shown in Fig. l, by contact with said portion of the swinging mold carrying frame as the mold is swung into position beneath the pot.

Any suitable means may be employed for swinging the trough from the position shown in Fig. l to that shown in Fig. 2, or from the position shown by full lines to that shown by dotted lines in Fig. 9, and the pivot sleeve of the trough may have a lug 76, as shown in Fig. 9, for contact withv a suitable stop pin 77 on the post 2 so as to stop the swinging movement of the trough when in the latter position.

I claim:

l. In a machine for casting metal under pressure, the combination of a melting pot, a mold for receiving the molten metal there.- from, said mold being movable into and out of Contact with said pot, a valved passage for supplying air under pressure to the melting pot, a plug for opening and closing the nozzle of the melting pot, a single operating device, and connections between the same and said air-controlling valve, dischargecontrolling plug and mold whereby movement of said device is caused to operate all of the parts.

2. In a machine for casting metal under pressure, the combination of the melting pot, a fixed structure containing the same, a mold for receiving the molten metal from the pot, means for moving said mold, laterally from and toward the discharge' end of the pot, locking bolts movable.A "laterally with the mold and also movable in a different plane, and openings in the fixed structure for receiving said bolts when the mold is adjusted to receive the'discharge from the pot.

3. In a/machine for casting metal under pressufe, the combination of a base structure, supporting posts projecting upwardly therefrom, a melting pot, a iire pot surrounding the same, and means independent of one another for mounting said melting pot and said re pot upon said supporting posts.

4. In a machine for casting metal under pressure,.the combination of a melting pot having a discharge nozzle, a mold, a frame carrying said mold, and a single pivotal mounting upon which said frame can swing, said pivotal mounting having its axis disposed in a plane transverse to the axis of the discharge nozzle of the melting pot, whereby, the frame can swing from a position in line with the axis of the discharge nozzle to a position inclined in respect thereto whereby the mold will be carried both laterally and longitudinally away from or toward the discharge nozzle.

5. In a'machine for casting metal under pressure, the combination of a melting pot having a discharge` nozzle, '13nd, a frame carrying said mold, a fixed pivotal mounting upon -which said Jframe can swing, said pivotal mounting having its axis disposed in a plane transverse to the axis of the discharge nozzle, and means for moving said transverse pivotal mounting longitudinally from and toward the discharge nozzle.

6. In a machine for casting metal under pressure, the combination of a melting pot, a mold having a separable cope. a frame carrying said mold and mounted so as to swing the same into line with or outwardly away from the melting pot in one plane, and means interposed between the mold and the cope whereby, as the mold is swung into line with the melting pot, the cope will be closed upon the same, and, as the mold is swung outwardly from the melting pot, will be moved away from the mold, the movement oi' the cope being in a plane different from that of the mold.

7. In a machine for casting metal under pressure, the combination of a melting pot, a. mold for receiving the molten metal therefrom, a core plate movable in respect to the mold so as to insert a core into or withdraw it from said mold, a frame carrying the mold and pivoted so as to swing said mold into line with or outwardly away from the melting pot, and means interposed between said mold frame and core plate whereby, as the mold'is swung into line with the pot, the core is inserted into the mold, and, as said mold is swung away from the pot, said core is withdrawn from the mold.

8. In a machine for casting metal under pressure, the combination of a melting pot, a mold for receiving the molten metal from said pot, an ejector plate movable from and toward the mold and having ejector pins extending into said mold, a mold-carrying frame mounted so as to swing said mold into line with or outwardly away from the melting pot, andr means interposed between the mold frame and the ejector plate whereby, as -the mold is swung into line with the pot, the ejector plate is operated so as to retract the ejector pins, and, as it is swung outwardly to swing said mold from beneath the pot, is operated so as to proJect sald pins.

' 9. In. a machine orcastingfmetal under pressure, the combination of a melting pot, a mold forreceiving the molten metal therefrom, Asaid mold having movable members, a'

mold-carryin frame mounted vso as to swmg the mo d beneath or outwardlyv awayfrom the melting pot, alseries of'cams fixedly mounted in respect to saidA swinging frame,` and cam-engaging vmembers on the movable 'elements of the mold,whereby the' members carried by said movable elements v of the mold, and serving, as the mold carrying frame is-swung outwardly from beneath the melting pot, to move said movable elements of the mold in one direction, and yielding means for moving said movable elements in the opposite direction as the mld is swung beneath the melting pot.

11. In a machine for 'casting metal under pressure, the combination of a melting pot, a mold for receiving the molten metal therefrom, a mold-carrying frame pivo ed so as to swing said mold'beneath or outwardly away from the melting pot, and a shield carried by `said frame and serving to protect the attendant from splashes of molten metal when the mold is in position for re-l ceiving the charge from the melting pot.

12. In a machine for casting metal under pressure, the lcombination 'of a-melting pot, a mold for receiving the molten metal therefrom, a mold-carrying frame mounted so as to swing said mold beneath or outwardly away from the melting pot, a vertically movable frame upon which said swinging frame is pivotally mounted, and means for raisin and lowering said vertically movable lgrame when the mold is adjusted to position beneath the melting pot.

13. In a machine for casting metal under pressure, the combination of a melting pot, a mold for receiving the molten metal therefrom, a mold-carrying) frame 'mounted so as away from the melting pot, avertically movable frame upon which sald swmging frame is pivotally mounted, means for raisirg and lowering said vertically movable frame when the mold is adjusted to position ybeneath the melting pot, and yleldmg means through which the ifting movement is imparted to said vertically movable frame,

eneath o`r outwardly 14.. In a machine for castin metal under pressure, the combination o `the `'melting pot, a|mold for receiving molten metal therefrom, said mold having a bod ywith laterally separable parts, `means or swinging said mold on a horizontal pivot toward and awayrom the melting pot, and means interposed between said mold swinging device and saidmold parts whereb as it .swings toward said pot, the lateral y separable sections of the mold will be closed, and, as it swings away from said pot, said laterally separable sections will be moved apart from one another. f

15.. Ina machine, for casting metal under pressure, the combination of amelting pot, a mold for receiving the molten metal therefrom, said mold having a body with laterally movable sections and a longitudinally `movable member, and means interposed between said member and said sections whereby as said member moves toward and from the body of the mold the laterally movable sections of the mold, will be moved toward and from each other 1 i 16. In a maclii e for casting metal under pressure, the combination of a melting pot, a mold for receivmgmolten metal from said pot, a mold-carrying frame mounted so as to swing upon an axis transverse to the axis of the discharge nozzle, and a fluid actuated.

jack having a longitudinally moving plun- A ger for pressin the mold carrying frame toward the meltlng pot when the mold is in castin position. f

17. n a machine for casting metal under pressure, the combination of a melting pot, a mold for receiving the molten metal from said pot, a mold-carrying frame mounted so as to swing upon an axis transverse to. the

' axis of the, discharge nozzle, a Huid actuated jack having a longitudinally moving plunger for pressin the mold-carrying ame toward the meltlng pot when the mold is in casting position, and valve-controlled means for actuating said jack.

18. In a machine for casting metal under pressure, the combination of .a melting pot, a mold for receiving molten metal from said pot, al swinging frame for carrying said mold into andout of casting position, a fluidactuated jack separate from said frame forv pressing the mold toward the meltingpot when in casting position. constantly acting means for lowering said jak, and valvecontrolled means for lifting the same.

`19. In a machine for casting metal under pressure, the combination'of r7a melting pot,

means for controlling thedischarge of metal therefrom, a mold movable laterally into and out of casting position in respect to said melting pot, means for locking the discharge mechanism in the closed position, and means interposed between said mold and locking,

means whereby, as the mold is moved into casting position, said locking means will be released.

20. In a machine for casting metal under pressure, the combination of a melting pot, a device for controlling the {ioxv of air imder pressure into the same, means for actuating said controlling device, a mol-d movable latorally into and out of casting position in respect to the melting pot, lne-ans for locking said air controlling means in position when the mold is moved out of casting position, and means interposed between said mold and locking means whereby, as the mold is moved laterally into casting position, said looking means will be released.

21. In a machine for casting metal under pressure, the combination of the melting pot, a discharge trough movable into and out of position for receiving metal discharged from said pot, a mold movable into and out of casting position in respect to the pot, and means interposed between said mold and trough whereby, as said mold is moved into casting position, said discharge trough will be moved out of receiving position.

22. A casting machine comprising a re ceptacle containing molten metal, a die or mold, means for raising and lowering said die or mold relative to said receptacle, means controlling lthe How of molten metal from said receptacle to said die or mold, means for looking said controlling means in closed position when said die or mold is in lowered position, and means for unlocking said controlling means when said die or mold is in raised position.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

ALBERT W. MORRIS.

Witnesses ARTHUR C. CHANCELLOR, E. M. Homs'rnn. 

